Okay, so that sounds worse than it really is.
Once in a while, I get a feeling in the back left side of my head, that feels like someone is pressing a finger against my brain. It's sort of a dull pressure that occasionally goes into a full-blown but short-lived headache.
Before it would come and go, but this one has stayed with me for a good two days now. I'm unsure as to if it could be a simple pressure/tension headache or something else. I'm 25, in decent health, though overweight.